<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h>hello guy</h>
<form method="post" action="HelloServlet">
    ISDN:<input type="text" name="isdn"><br>
    Name:<input type="text" name="name"><br>
    Author:<input type="text" name="author"><br>
    Price:<input type="text" name="price"><br>
    <input type="submit" />
</form>
</body>
</html>